Spelling
Checked on your computer as you write. Free, instant and available offline.
Proofreading software for novelists
A proofreader that knows it is reading fiction.
Catch the slips you stop seeing after the tenth read, right beside the page you are writing. Spelling and grammar are free and offline; the style pass is there when you want it.
Free trial. It includes enough credits to try the style pass on your own manuscript.
Three layers, one panel
From typos to craft, in the editor you write in.
Issues are grouped as errors, warnings and suggestions, and underlined in the text so you can see each one in context.
Grammar
Passive voice, repeated words, readability, articles, sentence spacing, quotes and contractions. Also local and free.
Style for fiction
Show don't tell, clichés, purple prose, filter words, adverbs, dialogue tags, sentence variety and head-hopping.
Mechanics the AI catches
Punctuation, homophones and capitalization that a rules-based checker misses.
Scene or selection
Proofread the scene you are in, or select a passage and send only that.
Fresh results only
Edit the scene after a pass and Bookshaper tells you the results may be out of date, with a one-click re-run.
Your call, every time
Suggestions, never silent edits.
Each issue explains the problem and shows a proposed fix. Apply it, ignore the rule, or dismiss the issue. Fixes are applied one at a time and undo like any other edit, and your curly quotes and punctuation are left as you set them.
What it costs
Free where it can be, metered where it is not.
Spelling and grammar cost nothing. The AI style pass is priced by the words you send, about 3 credits per 1,000 words, and shows its estimate before it runs. The free trial includes credits to try it, and a license comes with 300 starter credits.
The short version
Questions, answered.
What does Bookshaper's proofreader check?+
Spelling and grammar, including passive voice, repeated words, readability, sentence spacing, quotes and contractions. An optional style pass adds fiction craft checks such as show don't tell, clichés, purple prose, filter words, adverb overuse, dialogue tags, sentence variety and head-hopping.
Does it change my manuscript on its own?+
No. Nothing changes until you apply a fix. Each issue has its own fix, ignore and dismiss buttons, and every applied fix can be undone.
Does proofreading work offline?+
Spelling and grammar run on your computer, work offline and cost nothing. Only the style pass uses AI, and only when you start it.
How much does the style pass cost?+
It is priced by the words you send: about 3 credits for 1,000 words. Proofread one scene at a time, or select a passage to proofread just that. The button shows the estimate before you run it.
Will it flatten my voice?+
Style suggestions are conditioned on a style profile Bookshaper builds from your own prose, so they aim at your voice rather than a generic one. You decide which to take.
Can I use my own AI API key?+
Yes. If you have your own key from a supported AI provider, Bookshaper can use it instead of credits.
How much does Bookshaper cost?+
$29.99 one-time at launch pricing, through December 31, 2026, for Windows, macOS and Linux on one license, with 300 starter credits.
Try it on your own manuscript.
7 days of actual use, not 7 calendar days. Buy once when you are ready; one license covers Windows, macOS, and Linux.